Something which has happened for me for a few versions is a 'ding' sound when entering the minus sign into certain delta fields, not the normal ones on the inspection bar but when editing objects / facets, typing a minus sigh like -100 is a valid entry so TC shouldn't really complain.
Smesh editing nodes / edges, select node go to delta x, type - sign and it dings even though its a valid entry,
TC surface - select node same as above.
Selector mode editing - select face and start to move, tab to delta x, type -, ding
Note - the above operations all work fine and move the node / edge / face as expected.